<!--
 * @Description:
 * @Author: dh
 * @Date: 2022-08-01 15:56:47
 * @LastEditors: dh
 * @LastEditTime: 2022-08-12 14:24:37
-->
<template>
	<el-form ref="formRef" :model="dynamicValidateForm" label-width="120px" class="demo-dynamic">
		<el-form-item
			prop="email"
			label="Email"
			:rules="[
				{
					required: true,
					message: 'Please input email address',
					trigger: 'blur',
				},
				{
					type: 'email',
					message: 'Please input correct email address',
					trigger: ['blur', 'change'],
				},
			]"
		>
			<el-input v-model="dynamicValidateForm.email" />
		</el-form-item>
		<el-form-item
			v-for="(domain, index) in dynamicValidateForm.domains"
			:key="domain.key"
			:label="'Domain' + index"
			:prop="'domains.' + index + '.value'"
			:rules="[
				{
					required: true,
					message: 'domain can not be null',
					trigger: 'blur',
				},
			]"
		>
			<el-input v-model="domain.value">
				<template #append>
					<el-button class="mt-2" @click.prevent="removeDomain(domain)">Delete</el-button>
				</template>
			</el-input>
		</el-form-item>
		<el-form-item>
			<el-button type="primary" @click="submitForm(formRef)">Submit</el-button>
			<el-button @click="addDomain">New domain</el-button>
			<el-button @click="resetForm(formRef)">Reset</el-button>
		</el-form-item>
	</el-form>
</template>

<script lang="ts" setup>
import { reactive, ref } from 'vue';
import type { FormInstance } from 'element-plus';

interface DomainItem {
	key: number;
	value: string;
}

interface formType {
	domains: DomainItem[];
	email: string;
}

const formRef = ref<FormInstance>();
const dynamicValidateForm = reactive<formType>({
	domains: [{ key: 1, value: '' }],
	email: '',
});

const removeDomain = (item: DomainItem) => {
	const index = dynamicValidateForm.domains.indexOf(item);
	if (index !== -1) {
		dynamicValidateForm.domains.splice(index, 1);
	}
};

const addDomain = () => {
	dynamicValidateForm.domains.push({
		key: Date.now(),
		value: '',
	});
};

const submitForm = (formEl: FormInstance | undefined) => {
	if (!formEl) return;
	formEl.validate(valid => {
		if (valid) {
			console.log('submit!');
		} else {
			console.log('error submit!');
			return false;
		}
	});
};

const resetForm = (formEl: FormInstance | undefined) => {
	if (!formEl) return;
	formEl.resetFields();
};
</script>
